Collapsible bag type applicator



Aug. 17, 1965 J. E. PICATTI COLLAPSIBLE BAG TYPE APPLICATOR Filed March23, 1964 E Z. 00 m r W T m: 4 5 Wm m J United States Patent COLLAPSIBLEBAG TYPE APPLICATOR Joe E. Picatti, 1068 S. 11th t., San Jose, Calif.Filed Mar. 23, 1964, Ser. No. 353,865

Claims. (Cl. 222-107) The present invention relates to a masticapplicator, and pertains more particularly to a collapsible bag typeapplicator for fluent, cementitious material wherein a strong,rupture-proof bag has a filler opening in the apex of a tapered endportion thereof, a conical closure cap being fitted onto and adhesivelyattached to the tapered end portion after the bag is filled, the apex ofthe conical cap being severable to provide an opening through whichthecontents of the tube can be extruded.

In the past, many devices have been developed for xpressing fluentmaterials from. a collapsible container, such as, for example, the wellknown pastry bag used by chefs in decorating cakes and other foodproducts.

Another prior type of collapsible bag or tube type applicator is shownin Johnson Patent No. 2,769,578, issued Nov. 6, 195 6.

An object of the present invention is to provide an improved, bag typeapplicator for cementitious material which will of itself tend to sealoff any initial tendency to leak from the filler opening, and which willwithstand powerful expressing pressures exerted thereon.

Another object of the invention is to provide an improved, collapsiblebag type applicator for fluent, cementitious material, wherein a fillingopening is provided in the apex of a tapered end portion of a bagelement thereof, and a conical cap is fitted onto and adhesively securedto the tapered end of the bag after the latter has been filled.

A further object of the invention is to provide an applicator forplastic, fluent sealant material wherein a bag is made of strong,impervious fabric material, one end of the bag being tapered, the tip ofthe tapered end of the bag being truncated to provide a filling opening,and the untapered end, one side and the tapered end of the bag up to thefiller opening being firmly hemmed to provide a strong and permanentseal, a funnel-shaped tip portion of relatively still sheet materialsuch as gummed paper being fitted and secured onto the tapered end ofthe bag after the latter has been filled.

These, and other objects and advantages of the invention, will beapparent from the following description and the accompanying drawings,wherein:

FIG. 1 is a perspective view of a filled, bag type tube embodying thepresent invention in use.

FIG. 2 is a side elevational view of the empty bag portion of the deviceshown in FIG. 1 as it appears when its filling opening is applied to afiller tube through which the plastic material with which the bag is tobe filled is expressed into the bag to fill it.

FIG. 3 is a perspective view showing one form of adhesive coated paperblank for forming the funnel-shaped end member which is applied to thebag portion after filling the latter to complete the tube.

FIG. 4 is a perspective view in reduced scale of the funnel-shaped endmember and a fragment of the tapered end of the bag to which it isadhesively applied.

FIG. 5 is an enlarged fragmentary transverse sectional view taken alongline 5-5 of FIG. 1.

FIG. 6 is a fragmentary side elevational view of the discharge endportion of a filled tube in the process of having the pointed endportion of the funnel-shaped cap snipped off to provide a dischargeopening.

FIG. 7 is a plan view in reduced scale of a calendared fabric blank usedin making the bag portion of the tube.

Referring to the drawings, a filled, collapsible tube A (FIG. 1)embodying the invention comprises a bag portion It which is made byfolding double along its longitudinal center line an elongated blank 8(FIG. 1) of a suitable fabric, such as, for example, a cotton cantonflannel, with a sealing coat 12 (FIG. 5) on its inner side to seal thedesired contents of the bag therein.

A corner portion of the folded blank is cut away to provide a taperedend portion 13, and the superposed free through this tube from asuitable container (not shown) to fill the bag.

To provide a suitable applicator, and to seal the tube A during shippingand handling prior to use, a conical sealing cap 23 of suitable stiff,sheet material, such as, for example, a heavy, kraft type gummed paper,is shaped to conform to the tapered end portion 13 of the bag 10. Asillustrated in FIG. 3 this sealing cap 23 is made from a trapeziumshaped blank 24 of the desired material, divided by fold lines 27 and 28into three similar, righttriangular portions 29, 3t) and 31, eachtriangular portion of which is substantially similar to the taperedportion 13 of the bag blank B. These triangular portions are so arrangedthat when the portion 29 is folded over along the line 27 intosuperposed relation with the central triangular portion 30, and theportion 31 is moistened and is folded over along the line 28, and ispressed into superposed, adhering relation with the portion 29, theconical cap 23 illustrated in FIG. 4 is formed.

The term ernentitious as used herein to describe the material which thetubes are intended to contain, means air hardening or air setting, sinceit is an important feature of the invention that any slight seepage ofthe cementitious material from the filler opening into the space betweenthe fabric of the bag and the interior of the cap 23, by absorption ofsolvents in the cementitious material, and/or exposure to air occludedin the fabric, causes such seeping material to skin over, harden or set.Such initially seeping material then creates a strong sealing bondbetween the bag fabric and the cap around the tiller opening to securelyseal it.

After the bag It) has been filled with a desired fluent, plastic,cementitious material, such as, for example, roof mastic, the interiorof a cone shaped sealing cap 23 is moistened, and is fitted firmly ontothe tapered end portion 13 of the bag It substantially as shown in FIGS.1 and 6. The moistened, adhesive coating on the interior of the conicalcap 23 then adheres to the exterior surface of the tapered portion 13.

When it is desired to use the contents of the tube A, a portion of thetip of the conical cap 23 is cut off as shown in FIG. 6 to provide adischarge opening of desired size. Obviously, the further from the tipthe cut is made the larger will be such opening. By then gripping thebag portion 1! as shown in FIG. 1 and squeezing it, the contents thereofcan be extruded through such opening. After the tube A is empty the bagportion 10 thereof can be used as a rag upon which to wipe the usershands,

and may then be discarded.

The invention provides a simple, clean, leak-proof, easily handled,easily used and easily disposed of tube for containing and applyingfluent, plastic, cementitious material. Tubes embodying the inventionare easily and cheaply made, and can be easily and permappntly sealedafter initial filling. Any initial slight seepage or leakage of materialfrom the filler opening is self sealing as ex plained previously herein.Any portion of the contents of the tube remaining unused can beprotected by the application, over the original conical cap 23, of asupplementary cone shaped cap, not shown, which may be similar to theoriginal one. When thus closed, the tube is again completely sealed, andthe contents will remain fresh and ready for use whenever desired. Whenit is desired to use any such remaining portion of the contents, eithersuch supplementary cap may be withdrawn if it has not adhered tootightly, or the tip of the supplementary cap may be severed as in theinitial instance.

While I have illustrated and described a preferred embodiment of thepresent invention, it will be understood, however, that various changesand modifications may be made in the details thereof without departingfrom the scope of the invention as set forth in the appended claims.

Having thus described the invention, what I claim as new and desire toprotect by Letters Patent is defined in the following claims.

1. A collapsible bag type tube for containing and applying fluentplastic cementitious material comprising:

an elongated blank of strong fabric folded double lengthwise thereof,

a layer of sealing material impervious to the intended contents of thetube coating and sealing the inner surface of the folded fabric blank,one end of the folded fabric blank being tapered,

a folded hem along the initially free edges of the untapered end, thelongitudinal edge, and the tapered end portion of the doubled, taperedblank to provide a strong and firmly sealed bag structure, the apex ofthe tapered end portion of the bag thus formed being truncated andunhemmed to provide a filler opening, a conical cap of stiff, sheetmaterial of a size and shape fitted snugly onto the tapered end portionof the bag thus formed when the latter is filled with a fluent, plastic,cementitious material, and adhesive means adhesively interconnecting theinterior of the conical cap with the exterior of the poftion of thetapered end of the bag covered by the cap.

2. A collapsible bag according to claim 1 wherein the fabric of theblank is a cloth of soft, absorbent material so as to provide a wipingcloth after the bag has been emptied of its contents.

3. A collapsible bag type tube for containing and applying fiuent,plastic, cementitious material comprising:

an elongated blank of strong, impervious sheet material folded doublealong the longitudinal center line thereof, the two halves of the thusfolded blank being similar and superposed, one end of the folded blankbeing tapered, means strongly interconnecting in sealed relation thesuperposed edges of the untapered end, side, and tapered end portions ofthe doubled, tapered blank to provide a strong, rupture proof bagstructure, the apex of the tapered end portion of the bag thus formedbeing truncated and open to provide a filler opening, a conical cap ofstiff, sheet material fitted snugly in conforming relation onto thetapered end portion of the bag after the latter has been filled throughits filler opening with a fluent, plastic, cementitious material, and

adhesive means adhesively interconnecting the interior of the cap withthe exterior of the portion of the tapered end of the bag covered by thecap.

4. A collapsible bag according to claim 3 wherein the cap is a conicalcap of gummed paper with the gummed surface thereof on the interior.

5. A collapsible bag according to claim 4 wherein the conical cap isformed from a blank of gummed paper with two lines of fold dividing theblank into three similar triangular portions with corresponding sides ofadjacent triangular portions on each side of each line of fold, the

triangular portions being folded in sequence toward the gurnmed si e ofthe blank into superposed relation with each other along the two linesof fold, with the last triangular portion to be folded enclosing a freeedge of the first such triangular portion, thereby to form the conicalcap.

References Cited by the Examiner UNITED STATES PATENTS 529,690 11/94Arkell et al. -1

723,282 3/03 lessen et al 150-1 1,034,981 8/12 Crabs 222-107 X 1,068,3627/13 OReily 150-1 X 1,543,174 6/25 Mattson 107-52 1,716,403 6/29 White150-1 2,320,496 6/43 Weschler 222-107 X 2,769,578 11/56 Johnson 222-107FOREIGN PATENTS 236,896 7/45 Switzerland.

RAPHAEL M. LUPO, Primary Examiner.

1. A COLLAPSIBLE BAG TYPE TUBE FOR CONTAINING AND APPLYING FLUENTPLASTIC CEMENTITIOUS MATERIAL COMPRISING AN ELONGATED BLANK OF STRONGFABRIC FOLDED DOUBLE LENGTHWISE THEREOF, A LAYER OF SEALING MATERIALIMPERVIOUS TO THE INTENDED CONTENTS OF THE TUBE COATING AND SEALING THEINNER SURFACE OF THE FOLDED FABRIC BLANK, ONE END OF THE FOLDED FABRICBLANK BEING TAPERED, A FOLDED HEM ALONG THE INITIALLY FREE EDGES OF THEUNTAPERED END, THE LONGITUDINAL EDGE, AND THE TAPERED END PORTION OF THEDOUBLE, TAPERED BLANK TO PROVIDE A STRONG AND FIRMLY SEALED BAGSTRUCTURE, THE APEX OF THE TAPERED END PORTION OF THE BAG THUS FORMEDBEING TURNCATED AND UNHEMMED TO PROVIDE A FILLER OPENING, A CONICAL CAPOF STIFF, SHEET MATERIAL OF A SIZE AND SHAPE FITTED SNUGLY ONTO THETAPERED END PORTION OF THE BAG THUS FORMED WHEN THE LATTER IS FILLEDWITH A FLUENT, PLASTIC, CEMENTITIOUS MATERIAL, AND ADHESIVE MEANSADHESIVELY INTERCONNECTING THE INTERIOR OF THE CONICAL CAP WITH THEEXTERIOR OF THE PORTION OF THE TAPERED END OF THE BAG COVERED BY THECAP.